// classes
//-----------------------------------------------------------------------------
-class WXDLLEXPORT wxGenericMDIParentFrame;
-class WXDLLEXPORT wxGenericMDIClientWindow;
-class WXDLLEXPORT wxGenericMDIChildFrame;
+class WXDLLIMPEXP_FWD_CORE wxGenericMDIParentFrame;
+class WXDLLIMPEXP_FWD_CORE wxGenericMDIClientWindow;
+class WXDLLIMPEXP_FWD_CORE wxGenericMDIChildFrame;
//-----------------------------------------------------------------------------
// wxGenericMDIParentFrame